In-facepiece dust concentration is changed dozens of times in a matter of minutes due to changes of the size of the gaps between the mask and face. Source. A respirator is a device designed to protect the wearer from inhaling particulate matter, including airborne microrganisms, fumes, vapors, i.e. gases.
Why join Brainly? A community for students. Products of the neolithic culture Steel plows Boats with sails Domesticated dogs Wild figs. the answer would mostly likely be referring to things that actually were of use to the neolithic people and agriculture was the biggest thing making the answer steel plow. anonymous.
The neolithic area is associated with which of the following 1. making tools out of materials including metal 2. making large rock formations like Stonehedge for religious purposes 3. an architectural homework when people live in buildings instead of caves 4. the rise of agriculture 5. the start of a bilateral trade system. The rise of agriculture.